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WO2012092921A1 - Procédé et dispositif de moulage par soufflage de récipients stériles - Google Patents

Procédé et dispositif de moulage par soufflage de récipients stériles Download PDF

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Publication number
WO2012092921A1
WO2012092921A1 PCT/DE2011/002193 DE2011002193W WO2012092921A1 WO 2012092921 A1 WO2012092921 A1 WO 2012092921A1 DE 2011002193 W DE2011002193 W DE 2011002193W WO 2012092921 A1 WO2012092921 A1 WO 2012092921A1
Authority
WO
WIPO (PCT)
Prior art keywords
preform
blowing
sterilization
sterilizing agent
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2011/002193
Other languages
German (de)
English (en)
Other versions
WO2012092921A8 (fr
Inventor
Thomas Herold
Harald Rieger
Dieter Klatt
Martin Gerhards
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KHS GmbH
Original Assignee
KHS Corpoplast GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=45787049&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2012092921(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KHS Corpoplast GmbH filed Critical KHS Corpoplast GmbH
Priority to EP15000522.1A priority Critical patent/EP2957414B1/fr
Priority to CN201180068958.9A priority patent/CN103402734B/zh
Priority to EP11822820.4A priority patent/EP2661351B1/fr
Publication of WO2012092921A1 publication Critical patent/WO2012092921A1/fr
Anticipated expiration legal-status Critical
Publication of WO2012092921A8 publication Critical patent/WO2012092921A8/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/16—Biaxial stretching during blow-moulding using pressure difference for pre-stretching, e.g. pre-blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4673—Environments
    • B29C2049/4679—Sterile gas to surround or flush parts of the blow-moulding apparatus, e.g. blowing means, preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B29C2049/7832—Blowing with two or more pressure levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B29C49/121—Stretching rod configuration, e.g. geometry; Stretching rod material
    • B29C49/1212—Stretching rod configuration, e.g. geometry; Stretching rod material the stretching rod comprising at least one opening on the surface, e.g. through which compressed air is blown into the preform to expand the same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/42403—Purging or cleaning the blow-moulding apparatus
    • B29C49/42405—Sterilizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6418—Heating of preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/68—Ovens specially adapted for heating preforms or parisons
    • B29C49/6835—Ovens specially adapted for heating preforms or parisons using reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/68—Ovens specially adapted for heating preforms or parisons
    • B29C49/6855—Cooling of heating means, e.g. avoiding overheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate

Definitions

  • the invention relates to a method for the production of blow-molded at least partially sterile containers, in which a preform made of a thermoplastic material is first heated and then stretched by a stretching rod and acted upon by a pressurized fluid and in which a sterilizing agent fed into the region of the preform becomes.
  • the invention relates to an apparatus for producing at least partially sterile blow-molded containers having a supply device for applying at least a portion of a preform with a sterilizing agent, as well as having a heating path for controlling the temperature of the preforms and a blowing device for blow molding the preforms into the container is provided, wherein the blowing device comprises a stretching rod.
  • a manufacture of sterile blow-molded containers is typically carried out such that these containers after their blow molding and prior to filling using hydrogen peroxide or other chemicals. It is also already known to sterilize the preforms used as the starting product during the blow-molding of the containers, in particular the area of the inner surface of these preforms.
  • preforms made of a thermoplastic material for example preforms made of PET (polyethylene terephthalate), are different within a blow molding machine
  • Such a blow molding machine has a heating device and a blowing device, in the region of which the previously tempered preform is expanded by biaxial orientation to form a container.
  • the expansion takes place with the aid of compressed air, which is introduced into the preform to be expanded.
  • the procedural sequence in such an expansion of the preform is explained in DE-OS 43 40 291.
  • the preforms and the blown containers can be transported by means of different handling devices.
  • the use of transport mandrels, onto which the preforms are attached, has proven to be useful.
  • the preforms can also be handled with other support devices.
  • the use of tongs for handling preforms and the use of expanding mandrels which are insertable for mounting in an orifice portion of the preform are also among the available constructions.
  • a handling of containers using transfer wheels for example, in DE-OS 199 06 438 in an arrangement of the transfer wheel between a blowing wheel and a Output route described.
  • blow molding stations different embodiments are known.
  • blow stations which are arranged on rotating transport wheels, a book-like unfoldability of the mold carrier is frequently encountered. But it is also possible to use relatively movable or differently guided mold carrier.
  • fixed blowing stations which are particularly suitable for receiving a plurality of cavities for container molding, typically plates arranged parallel to one another are used as mold carriers.
  • EP-A 1 086 019 describes the sterilization of hot preforms with a hot gaseous sterilant.
  • a hot gaseous sterilant There are used consecutively arranged separate treatment stations, namely a first heating module, a sterilization module and a second heating module.
  • the disadvantage here is the temperature behavior of the preform during the sterilization process and the uncontrolled leakage of the sterilant from the preform within the heater.
  • EP-A l 896 245 a method is described in which a gaseous sterilant is introduced into a cold preform before heating and condenses here.
  • the problem here is to ensure complete condensation on the entire inner surface of the preform, since the inflowing hot sterilant increases the inner wall temperature of the preform.
  • the sterilizing agent after its evaporation in the area of the heating, emerges from the preform in an uncontrolled manner within the heating.
  • EP-A 2 138 298 describes a device in which, as a precaution, sterilizing devices are arranged both in front of the blowing module used and behind the blowing module used. This results in a very large mechanical engineering effort.
  • WO 2010/020530 AI the arrangement of a sterilizer between a heater and the blowing module is described.
  • the entry amount of sterilant in the area of the blowing module is difficult to predict.
  • the amount of sterilant discharge into the environment can not be controlled and a corresponding contamination is not excluded.
  • the object of the present invention is to improve a method of the initially mentioned type such that a sufficient sterility can be ensured in a simple manner.
  • Another object of the present invention is to construct a device of the aforementioned type such that an effective sterility is ensured with little effort.
  • a feeding device for a sterilizing agent is arranged in the region of the blowing device for at least partial and at least temporary sterilization of the stretching rod.
  • a fully automatic sterilization without additional manipulations can be achieved in that the stretch rod is at least partially passed through a cleaning chamber.
  • a particularly simple procedure can be achieved in that a preform is inserted into the blowing station.
  • a large sterilization area along a longitudinal extent of the stretch rod is provided by stretching and partially expanding the preform.
  • a flow of sterilant along the stretch rod is assisted by feeding at least a portion of the sterilant through the stretch rod.
  • Fig. 1 is a perspective view of a blowing station for
  • Fig. 2 is a longitudinal section through a blow mold in which a
  • FIG. 3 shows a sketch to illustrate a basic structure of a device for blow-molding of containers
  • Fig. 4 shows a modified heating with enlarged
  • heating capacity 5 shows a schematic representation of a heating module of a blow molding machine, in which a sterilizing device is arranged in the region of the heating module,
  • FIG. 7 shows a longitudinal section through a blowing station with a container inserted during the sterilizing process when the sterilizing agent is fed through the stretching rod
  • FIG. 8 shows a modified embodiment with respect to FIG. 7 when the sterilizing agent is fed to the stretching rod
  • Fig. 9 is a further illustration for illustrating a
  • FIG. 1 The basic structure of a device for forming preforms (1) in container (2) is shown in FIG. 1 and in FIG. 2.
  • the device for forming the container (2) consists essentially of a blowing station (3), which is provided with a blow mold (4) into which a preform (1) can be inserted.
  • the preform (I) may be an injection-molded part of polyethylene terephthalate.
  • the blow mold (4) consists of mold halves (5, 6) and a bottom part (7) which is a lifting device (8) is positionable.
  • the preform (1) can be held in the region of the blowing station (3) by a transport mandrel (9) which, together with the preform (1), passes through a plurality of treatment stations within the device. But it is also possible, the preform (l), for example via pliers or other handling means directly into the tuyere (4).
  • a connecting piston (10) is arranged, which feeds compressed air to the preform (1) and at the same time performs a seal relative to the transport mandrel (9).
  • a connecting piston (10) is arranged, which feeds compressed air to the preform (1) and at the same time performs a seal relative to the transport mandrel (9).
  • a stretch rod (11) which is positioned by a cylinder (12).
  • the use of curve segments is particularly useful when a plurality of blowing stations (3) are arranged on a rotating blowing wheel.
  • a use of cylinders (12) is expedient if stationarily arranged blowing stations (3) are provided.
  • the stretching system is designed such that a tandem arrangement of two cylinders (12) is provided. From a primary cylinder (13), the stretch rod (11) is first moved before the beginning of the actual stretching operation into the region of a bottom (14) of the preform (1).
  • the primary cylinder (13) with extended stretching rod together with a carriage (15) carrying the primary cylinder (13) is positioned by a secondary cylinder (16) or via a cam control.
  • the secondary cylinder (16) in such a cam-controlled manner that a current stretching position is predetermined by a guide roller (17) which slides along a curved path during the execution of the stretching operation.
  • the guide roller (17) is pressed by the secondary cylinder (16) against the guideway.
  • the carriage (15) slides along twoêtselernenten (18). After closing the mold halves (5, 6) arranged in the region of carriers (19, 20), the carriers (19, 20) are locked relative to one another by means of a locking device (40).
  • Fig. 2 shows in addition to the blown container (2) and dashed lines drawn the preform (1) and schematically a developing container bladder (23).
  • Fig. 3 shows the basic structure of a blow molding machine, which is provided with a heating section (24) and a rotating blowing wheel (25).
  • a preform input (26) the preforms (1) are transported by transfer wheels (27, 28, 29) into the region of the heating path (24).
  • heating radiator (30) and blower (31) are arranged to temper the preforms (1).
  • blowing wheel (25) After a sufficient temperature control of the preforms (1), they are transferred to the blowing wheel (25), in the region of which the blowing stations (3) are arranged.
  • the finished blown containers (2) are fed by further transfer wheels to a delivery line (32).
  • thermoplastic material different plastics can be used. Suitable for example PET, PEN or PP.
  • the expansion of the preform (1) during the orientation process takes place by compressed air supply.
  • the compressed air supply is in a Vorblasphase in which gas, for example compressed air, is supplied at a low pressure level and divided into a subsequent main blowing phase, is supplied to the gas at a higher pressure level.
  • gas for example compressed air
  • compressed air is typically used at a pressure in the interval of 10 bar to 25 bar and during the main blowing phase compressed air is supplied at a pressure in the interval of 25 bar to 40 bar.
  • the heating section (24) from a plurality of revolving transport elements (33) is formed, which are strung together like a chain and guided by guide wheels (34).
  • guide wheels (34) In particular, it is envisaged to open a substantially rectangular basic contour by the chain-like arrangement.
  • a single relatively large-sized guide wheel (34) and in the region of adjacent deflections two comparatively smaller dimensioned guide wheels (36) used In principle, however, any other guides are conceivable.
  • the arrangement shown to be particularly useful since in the region of the corresponding extent of the heating section (24) three deflecting wheels (34, 36) are positioned, and although in each case the smaller deflection wheels (36) in the region of the transition to the linear curves of the heating section (24) and the larger deflection wheel (34) in the immediate transfer area to the transfer wheel (29) and the input wheel (35).
  • chain-like transport elements (33) it is also possible, for example, to use a rotating heating wheel use.
  • the fans (31) introduce cooling air into the region of cooling air ducts (39), which in each case oppose the associated radiant heaters (30) and emit the cooling air via outflow openings.
  • the cooling air ducts (39) can provide reflectors for the heating radiation in the area of the surfaces opposite the radiant heaters (30). It is also possible to realize cooling of the radiant heaters (30) via the discharged cooling air.
  • Fig. 5 shows schematically and greatly simplified an arrangement similar to the representation in Fig. 3 with additional arrangement of a sterilizer (41) in the region of the heating section (24). In addition, the transport elements (33) of the heating section (24) are shown.
  • the sterilizing agent is preferably introduced into the preform (1) in a gaseous state; in particular, a temperature of the sterilizing agent above 100 ° C. is intended.
  • the preform (l) preferably has a temperature of above 80 ° C. in the region of its inner surface to be sterilized when carrying out the sterilization process.
  • the sterilizing agent particular consideration is given to the use of hydrogen peroxide.
  • Fig. 5 illustrates the arrangement of the preform (1) during the performance of the sterilization process in the region of the heating section (24). The preform (1) is acted upon both by the sterilizing agent and by radiant heaters (30).
  • the preform (1) is exposed to the sterilizing agent in the region of the inner surface of the preform (1) and to be exposed to the heating radiation in the region of an outer surface.
  • the radiant heater (30) along one transport direction of the preforms (1) through the heating section (24) are arranged on one side.
  • the heaters (30) opposite reflectors (42) are positioned.
  • the radiant heaters (30) are typically arranged in the region of heating boxes, wherein reflectors supported by the heating box are arranged on a side of the radiant heaters (30) facing away from the preforms (1).
  • the reflectors have a reflection profile.
  • a filter disc can be positioned, which has frequency-selective properties.
  • the filter disk may for example consist of quartz glass.
  • the radiant heaters (30) generate a heating radiation in the NIR range.
  • the sterilant has a temperature in the range of 100 ° C to 130 ° C during the performance of the sterilization.
  • the preform (1) has a temperature of 100 ° C to 130 ° C during the performance of the sterilization at least in the region of its inner surface.
  • a typical sterilization time is about 0.1 to 0.5 sec.
  • the sterilizing agent vaporized hydrogen peroxide which is mixed with hot air is preferably used.
  • the hydrogen peroxide concentration is about 15 to 35 percent by weight.
  • Fig. 6 shows a partial representation of a cross section of a cleaning chamber (43) which is arranged in the region of the blowing station (3).
  • the cleaning chamber (43) has a chamber wall (44) and an interior space (45). Through the interior (45) through the stretch rod (11) is sealed out.
  • the sealing can be done, for example, using O-rings (46, 47).
  • the interior (45) has an inlet (48) and an outlet (49) for a sterilant.
  • hydrogen peroxide As a sterilizing agent, for example, hydrogen peroxide can be used. In particular, it is contemplated to use a mixture of hydrogen peroxide and air.
  • Fig. 7 shows an embodiment in which a sterilization of the stretching rod (11) takes place within the blowing station (3).
  • the stretch rod is retracted into a receptacle (51).
  • the receptacle (51) can be a stretched and partially expanded preform (1), it is also possible to use a finished blown container (2).
  • a special receptacle (51) in the blowing station (3) for the implementation of the sterilization process, which is provided only for this specific use.
  • FIG. 7 shows an embodiment in which the sterilizing agent is supplied through an interior of the stretching rod (1) and exits out of outflow openings (52) of the stretching rod (11). The sterilizing agent then flows on the outside of the stretching rod (11) and performs the intended sterilization.
  • Fig. 7 shows a sterilizing valve (53) which controls the supply of the sterilizing agent.
  • a vent valve (54) and a return valve (55) are shown.
  • the return valve (55) may be connected to a separate receptacle to prevent escape of the sterilant into the environment.
  • blower valves (56, 57) can be seen.
  • a first lower blow pressure PI is generated using a throttle valve (58) from a second higher blow pressure P2.
  • PI is typically in a range of 5 bar to 20 bar, P2 in a range of 10 bar to 40 bar.
  • Fig. 8 shows a comparison with FIG. 7 modified embodiment.
  • the supply line preferably takes place via an annular gap surrounding the stretching rod (11) in the region of a mouth section (21) of the receiving container (51).
  • Fig. 9 shows an arrangement similar to Fig. 7 and Fig. 8.
  • a preform (1) is located.
  • the preform (1) can be converted, for example, to the receptacle (51).
  • the blow mold (4) limits the sterilization space for the stretch rod.
  • a suitable seal ensures the supply and discharge of the sterilizing medium.
  • the sterilization of the stretch rod (11) preferably takes place in a special cleaning mode of the blow molding machine.
  • This cleaning mode can be activated cyclically or as required.
  • receptacles (51) they are after the completion of the cleaning process discharged to avoid contact with the blown in a normal production process containers (2).
  • the receptacle (51) preferably has a temperature such that condensation of sterilant on the receptacle (51) is prevented when sterilization is performed on the stretch rod (11).

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif servant à la fabrication de récipients moulés par soufflage et stériles au moins par endroits. Une préforme (1) constituée de matière thermoplastique est tout d'abord chauffée, puis étirée par une tige d'étirage (11) et soumise à l'action d'un fluide sous pression. Un agent de stérilisation est amené dans la zone de la préforme. La tige d'étirage est stérilisée au moins par endroits et au moins temporairement dans la zone d'un dispositif de soufflage. Le dispositif de soufflage est à cet effet équipé d'un dispositif d'amenée pour un agent de stérilisation.
PCT/DE2011/002193 2011-01-04 2011-12-23 Procédé et dispositif de moulage par soufflage de récipients stériles Ceased WO2012092921A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15000522.1A EP2957414B1 (fr) 2011-01-04 2011-12-23 Procédé et dispositif destinés au formage par soufflage de récipients stériles
CN201180068958.9A CN103402734B (zh) 2011-01-04 2011-12-23 用于吹塑成型消毒的容器的方法和装置
EP11822820.4A EP2661351B1 (fr) 2011-01-04 2011-12-23 Procédé et dispositif de moulage par soufflage de récipients stériles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011008132.1 2011-01-04
DE102011008132A DE102011008132A1 (de) 2011-01-04 2011-01-04 Verfahren und Vorrichtung zur Blasformung von sterilen Behältern

Related Child Applications (1)

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EP15000522.1A Previously-Filed-Application EP2957414B1 (fr) 2011-01-04 2011-12-23 Procédé et dispositif destinés au formage par soufflage de récipients stériles

Publications (2)

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WO2012092921A1 true WO2012092921A1 (fr) 2012-07-12
WO2012092921A8 WO2012092921A8 (fr) 2013-08-01

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PCT/DE2011/002193 Ceased WO2012092921A1 (fr) 2011-01-04 2011-12-23 Procédé et dispositif de moulage par soufflage de récipients stériles

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EP (2) EP2957414B1 (fr)
CN (1) CN103402734B (fr)
DE (1) DE102011008132A1 (fr)
WO (1) WO2012092921A1 (fr)

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US20170197352A1 (en) * 2014-07-13 2017-07-13 Khs Corpoplast Gmbh Method and blow-molding machine for the blow-molding production of containers that are sterile at least in certain regions
EP3109030A4 (fr) * 2014-02-19 2018-02-21 Dai Nippon Printing Co., Ltd. Machine à mouler par soufflage et procédé de stérilisation de celle-ci

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EP3269529B1 (fr) * 2015-03-09 2021-04-21 Dai Nippon Printing Co., Ltd. Machine de moulage par soufflage et procédé de stérilisation de celle-ci
DE102015012939A1 (de) 2015-10-01 2017-04-06 Kocher-Plastik Maschinenbau Gmbh Verfahren zur Reduzierung der mikrobiologischen Belastung von Behältererzeugnissen
DE102015012937A1 (de) 2015-10-01 2017-04-06 Kocher-Plastik Maschinenbau Gmbh Vorrichtung zur Reduzierung der mikrobiologischen Kontaminaten von Behältererzeugnissen
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DE102020125957A1 (de) * 2020-10-05 2022-04-07 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit verbesserter Spülstangenanordnung
DE102024001610A1 (de) 2024-05-17 2025-12-04 Rommelag Engineering Gmbh Vorrichtung und Verfahren
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DE4212583A1 (de) 1992-04-15 1993-10-21 Krupp Corpoplast Masch Vorrichtung zur Blasformung
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Publication number Priority date Publication date Assignee Title
EP2818302A1 (fr) * 2013-06-26 2014-12-31 Krones AG Procédé et dispositif de déformation d'ébauches en plastique en conteneurs en plastique
CN104275792A (zh) * 2013-06-26 2015-01-14 克朗斯股份有限公司 用于将塑料预制件成形为塑料容器的方法和设备
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EP3109030A4 (fr) * 2014-02-19 2018-02-21 Dai Nippon Printing Co., Ltd. Machine à mouler par soufflage et procédé de stérilisation de celle-ci
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US11618202B2 (en) * 2014-07-13 2023-04-04 Khs Gmbh Method and blow-molding machine for the blow-molding production of containers that are sterile at least in certain regions

Also Published As

Publication number Publication date
EP2957414A1 (fr) 2015-12-23
EP2957414B1 (fr) 2019-02-20
DE102011008132A1 (de) 2012-07-05
EP2661351A1 (fr) 2013-11-13
WO2012092921A8 (fr) 2013-08-01
EP2661351B1 (fr) 2015-04-22
CN103402734A (zh) 2013-11-20
CN103402734B (zh) 2015-12-09

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